Role of c-Jun N-terminal kinase activation in blastema formation during planarian regeneration

• Junichi Tasaki

• Norito Shibata

• Toshihide Sakurai

書誌事項

タイトル別名

• Role of c Jun N terminal kinase activation in blastema formation during planarian regeneration

抄録

The robust regenerative abilities of planarians absolutely depend on a unique population of pluripotent stem cells called neoblasts, which are the only mitotic somatic cells in adult planarians and are responsible for blastema formation after amputation. Little is known about the molecular mechanisms that drive blastema formation during planarian regeneration. Here we found that treatment with the c‐Jun N‐terminal kinase (JNK) inhibitor SP600125 blocked the entry of neoblasts into the M‐phase of the cell cycle, while allowing neoblasts to successfully enter S‐phase in the planarian Dugesia japonica . The rapid and efficient blockage of neoblast mitosis by treatment with the JNK inhibitor provided a method to assess whether temporally regulated cell cycle activation drives blastema formation during planarian regeneration. In the early phase of blastema formation, activated JNK was detected prominently in a mitotic region (the “postblastema”) proximal to the blastema region. Furthermore, we demonstrated that undifferentiated mitotic neoblasts in the postblastema showed highly activated JNK at the single cell level. JNK inhibition by treatment with SP600125 during this period caused a severe defect of blastema formation, which accorded with a drastic decrease of mitotic neoblasts in regenerating animals. By contrast, these animals still retained many undifferentiated neoblasts near the amputation stump. These findings suggest that JNK signaling plays a crucial role in feeding into the blastema neoblasts for differentiation by regulating the G2/M transition in the cell cycle during planarian regeneration.

収録刊行物

• Development, growth & differentiation

  Development, growth & differentiation 53 (3), 389-400, 2011-04

  Kobe : Japanese Society of Developmental Biologists ; 1969-2014

キーワード

• blastema
• cell cycle
• c-Jun N-terminal kinase
• planarian
• regeneration
• stem cell

詳細情報

• CRID: 1520290883368279936
• NII論文ID: 10028202754
• NII書誌ID: AA00627804
• ISSN: 00121592
• ISSN: 1440169X
• DOI: 10.1111/j.1440-169x.2011.01254.x
• NDL書誌ID: 11058043
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I11058043
• Web Site: https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1440-169X.2011.01254.x
• Web Site: https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1440-169X.2011.01254.x
• 本文言語コード: en
• NDL 雑誌分類:
  • ZR2(科学技術--生物学--生化学)
• データソース種別:
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN